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Cone

	How It Works	Advantages
	Cone grips the face of the work piece to open and close the blade (Must be a machined surface)	Reliable performance on any machine tool. CNC or manual Cost effective alternative to high production tooling

Flywheel

	How It Works	Advantages
	Utilizes the inertia generated during rapid spindle acceleration to open and close the blade.	Ideal for modern CNC machines with rapid acceleration and deceleration Cost effective alternative to high production tooling

Pad or Ring

	How It Works	Advantages
	Pads grip the inside diameter of the pilot hole and open and close the blade	Ideal for holes sizes greater than Ø57 [2.25”] where front (& back) spotfacing is required

Torque Bar

	How It Works	Advantages
	Utilizes an anti-rotation devise during spindle reversal to open and close the blade. A Torque Bar Driver or an Arrester-rod is required	Ideal for high production runs that require the maximum degree of reliability. Ideal for transfer lines and CNC machines.

Air or Coolant

	How It Works	Advantages
	High pressure coolant drives the blade open. Spring pressure closes the blade when the coolant is shut off.	Simple to set up and run. Perfect for high production runs. Ideal for machines with high pressure filtered coolant system.

Bearing Guided

	How It Works	Advantages
	A tapered pilot locates on a process bore supporting the tool a full 360 degrees. Adjustable insert cartridge Available in Torque Bar and Cone activated configurations.	Excellent size control and repeatability. Capable of holding high precision tolerances of 0.0025mm [0.0001”] when producing back counterbores.

Extended Range

	How It Works	Advantages
	A rack and pinion gear opens the blade like a flick knife. Available in Torque Bar and coolant activated configurations.	Extended back spotface to hole-size ratio (Largest in the industry). Perfect for Internal machining in differential gear cases including spherical gear faces.